Author: Joseph Ciarrochi
Date: 14:38:40 02/18/06
Go up one level in this thread
Fruit and rybka also differ dramatically in personality, and I think they are more of an odd couple rather than a clone. Fruit seems very conservative (for example relectant to give up pawns or make specualtive sacrifices), wheras rybka seems much more speculative and often throws pawns to the wind. This position is one example where you see the fundmental philosophy of the two programs differ. Rybka wants to play the crazy nxd5, even up to depth 19 (and this is probably a losing move, as discussed previously). Fruit wants to play the ultra-solid d6, and I don't think nxd5 ever comes into consideration as a first option. Fritz9 looks at a variety of moves and then , if i recall correctly, wants to play qa5 (though it likes bxc3 for awhile). [D]rnbqk2r/pp1p1pp1/4pn1p/2pP4/1bP4B/2N5/PP2PPPP/R2QKBNR b KQkq - 0 6 Another demonstration. Go the the starting position for both sides and remove one pawn for white, say, the f pawn. Typically, rybka will think the position is almost equal, wheras fruit and fritz think black is winning by about .8. In my view, rybka is the most willing to give up pawns to gain some sort of positional advantage or piece activity improvement [D]rnbqkbnr/pppppppp/8/8/8/8/PPPPP1PP/RNBQKBNR w KQkq - 0 1
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